I know this isnt about batteries for flashlights, but I figured it was close enough and this forum is frequently mentioned as the go-to place for battery knowledge.
I have some digital cameras that are about 12 years old and they still have their original lithium ion rechargeable batteries. I like these cameras alot and even though I havent used them in atleast a few years, I plan on using them now and for the next atleast 5 years or so. I'm just concerned about the 12 year old batteries health, and also of the ability to find new replacement batteries for these old digital cameras. If the batteries have lost most of their performance and new replacement batteries are impossible or very hard to find, then its probably time to say goodbye to these cameras. I guess the primary reason I made this post is to determine if these cameras are still worth keeping due to the health of their batteries and the possible difficulty of finding new replacement batteries. If I didnt like the cameras so much then this probably wouldnt be debatable for me and I would probably just get rid of them now. The cameras I'm sure will last for many more years, but the batteries I'm not so sure of, even if they seem to be ok now, I would guess that they are on borrowed time now.
Based on what I have read about lithium ion rechargeable batteries, most websites claim lithium ion batteries will only last a few years, maybe 5-7 if your lucky, and 10 is really pushing it. Apparently there are many factors that go into how long they will last like how many cycles they have been through, the temperature they are stored at, and a few other factors. In general though it seems like the opinion is that up to 5 years is what to expect when they are frequently used and not taken care of very well, possibly up to 7 or 8 if they are frequently used but well taken care of, and if you can get 10 years out of a lithium ion battery then you are very lucky but by that time the battery has likely lost a significant amount of its performance.
The lithium ion batteries I have in my cameras are all about 12 years old, all of them charge up just fine and immediately upon coming off the chargers they all show a strong voltage, and they are all showing a high load test performance with a battery load tester. Right after this I put 1 of the batteries in 1 of the cameras and started taking pictures one after another with brief pauses every 50 pictures or so to make sure nothing overheated. The camera was setup to use a moderate load on the battery like setting everything on auto, keeping the screen on the whole time, and using the flash in every picture, but I didn't use the zoom and didnt change any settings while taking the pictures. So I didnt put the heaviest load on the battery, but I didnt put the lightest load on it either. The sticker on the front of the camera rated the battery at 390 shots when new, and that probably took into account average use along with extended periods of time that the user will have the screen on but not taking any pictures, which I didnt do.
So to summarize, I charged the battery, immediately put it in the camera, set the camera on full auto, kept the screen on the whole time, used flash in every picture, and started taking pictures 1 after another with brief pauses every 50 pictures or so to make sure nothing overheated. When the camera finally displayed the low battery icon and shut itself off, it was up to 765 pictures.
It seems that the general consensus is that a lithium ion battery that is 12 years old should either be dead or close to it. I know that the performance right off the charger is only 1 indication of a batteries health, and another indicator is its self-discharge rate (which I havent tested fully yet), but am I just very lucky to get that good of performance from a 12 year old lithium ion battery right off the charger? Should I hold the celebration before I know what the batteries self-discharge rate is? Should I assume that the battery is probably on borrowed time? What am I missing here? Whats your opinion about my experience?
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